Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. scientific concepts
5. physical sciences concepts
6. astronomical concepts

Anotations

Scope note:

Assemblages of non-stellar objects that are gravitationally bound and orbiting a star or star system. Planetary systems may include one or more planets and other bodies, such as dwarf planets, moons, asteroids, meteoroids, comets, and cosmic dust.